Animal oil is animal fat, animal oil represented by lard, containing saturated fatty acids and cholesterol more. Excessive consumption is easy to cause hypertension, atherosclerosis, coronary heart disease, hyperlipidemia and cerebrovascular accidents, is not good for the human body. However, animal oil is more flavorful and has the effect of promoting the absorption of fat-soluble vitamins A, D, E, K and so on. In addition, animal oil cholesterol is an important component of human tissue cells, is the synthesis of bile and some hormones are important raw materials.